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Jujube fruit is an increasingly important fruit in the world for its high nutrients content and the harvest time is crucial for jujube fruit quality. The aim of the study was to evaluate the quality changes and the optimum time for harvesting of jujube fruit (Zizyphus jujuba Mill. cv. Changhong) by chlorophyll fluorescence. Our results showed that jujube fruit cv. Changhong displayed a double sigmoid...
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